Method of fastening a valve fitting to a cable



June 27, 1933 J. R. BRANT 1,915,847

METHOD FASTENING A VALVE FITTING lTO A CABLE Filed June 27, 1931 mmmTIl ATTORNE Y5.

fitting 23 is screwed therein, asbest shown in Figurev 3. The said valve fitting is of the common type used for automobile tires and carries an internal valve permitting the en trance of gasto the cable but preventing the exit of gastherefrom. The plate 17 which forms a part ofthe clamping-.apparatus heretofore'described, hasfftted therein a bushing 24 of aluminum or other material to Which solder Will not adhere. The said 'bushing is formed with a central opening having :la counterbored recess 25 therein. When the fitting has been put in place, the'saidclanrp ing apparatus is reversed,.as.shoW-nin Figure 2, and the recess 25 is engaged with `the upper -edgeof :a ferrule 26 which is placed about the fitting 23. With .the parts in lthis position, .the block .1l engagesthe .undersurfaceof the cable instead .of .the upper surface. A'

centering 4tool .257, having a portion '28 of slightly less diameter than 'the .internal di ameters ofthe bu-shing 24: and ferru-le 26 .and having a .central cavity 30 substantially fitting I'the valve fitting 23, is. then .placed over the val-ve fitting and vWithin the ferrule and bushing. The ftool .27 is rfonmed with `*a taperingl portion 2.9 adapted .to engage the upper edge fof the bushing 24 and thus acc-u- .rate'ly lcenters 'the :bushing vand ferrule labout .the fitting. 23.. With the centering tool in place, the proper llink of Achain 11.6 is slipped through the slot lfb into the opening 17a,

'The handles 18 :are then vrevolved to Aclamp .the ferr-ule 26 securely .aggamst .the upper sur- :face :of tlrecable- 10. y

'The :centering tool 27 is preferably used also as .fa-soldering l,tool in the manner sho-Wn in Figure .13.. However, desired, 1a vseparate .tool may he used for centeringand ,for -soldering. After the ferrufle 26 has been .clampedxin place, the seldering tool is heated .and `is placed over -theiitting 23 and 'within the; ferrule v26. The outerdiameter of the portion 28 of the said tool is smaller than the inner diameter of .the bushing 24 and ferrule 26 by fan- .amount .-su'flicient to permit fusibile material, such .as solder, to :flow into the ferrule26. With `the parts in this position, a stick or Wire .3l of :such fusible Vmaterial is brought against'the side of the heated solderingtool the said material .is melted thereby land .flows into the ferrule 26. As .the fusible material fills the ferrul'e., .the .tool .27 is gradually Withdrawn until the Eferrule is substantially filled, as shown-at .32 in Figure 3. The fitting V23 is provided with an anchorage portion 33 substantially :as described in .the before-*mentioned co-pending which applications and this anchorage, When imbedded in the fusible material 32, assists greatly in making the anchorage secure.

When the ferrule 26 has been lled, the soldering tool and clamping mechanism are removed and a cap 34 is then fitted over the fitting 23. The said caphas internal threads engaging external threads on the tfitting and i lhas a sharpened lower edge 35 adapted to cut into the upper surface of the fusible material 32 'andtlrus provide air-addition al seal against the escape lof gas..- It will be seen that the l"lowerper-tion 28 Yof the-@soldering tool is substantially Hat. It thus serves to preserve a 'substantially'flat upper surface of the solderof the cap `3st may-engagesaidsurface equally about its entire circumference. The fitting 23V tion. Without such ,passage-s, the :said .gas

tendsto .boil out through theV fusible material and .thus .destroys the smoothness fof the .upper surface and vthe uniformity of the lilling.

It will'he .seen that a method andmeans are thus .providedfor anchoring the valve fitting n insurepthat the .same maybe .carried out rapidlyand kexpeditiously yin the field and insure that :astrong permanent .and gas-tight assembly is produced. The .apparatus involved `is .of a relativelyv light .construction and ,may be v.easily transported Without :add-

great Weight `to the electricians toolkit.

The invention claimed is: Y

A method .of .fastening .a yalve :fitting :to a sheathed cable, including the steps of a hole through the sheath of said cable, inserting-the valve fitting'therein, clamping la ferrule against said sheath in position to surround the lower portion of Y.said vfitting, .covering `said `:fitting with a heatedlsoldering tool .extending into said .ferrule 1and slightly spaced from the inside surface of said ferr-111e, applying a. fusible material to .the side -of `said tool for melting the samexto lpermit .the said' A,g-Inate'rial 32 sothattlre sharpened `edge-35 material to ow rinto said ferrule, .andrgradually withdrawing ysaid..soldering tool Vas .the ferrule fills 'With'saidmaterialL I Y In Witness whereof,l Iliayel hereunto affixed my signature.- l

.JOHN n. BRAM.: l 

